Last post on May 15, 2013 at 1:28 PM
You are in the Buick Enclave
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Buick Enclave, Heating / Cooling, SUV
#1 of 201 Buick Enclave AC problem
Jul 29, 2009 (7:43 am)
On a recent 10 hour drive this summer in my Enclave, I noticed the front AC vents were not delivering the normal air flow about 4-5 hours into the trip. My wife and I were starting to sweat. We did not have the rear "aux" system turned on. We tried taking the system off "auto", turning up the fan motor, turning system off to rest it, etc etc, but nothing worked. We ended up cranking the rear aux system (which was working) to lower the temps and make the rest of the trip somewhat bearable. The next day the front AC worked fine on short twips around town so I know we are not low on freon or anything. On the return trip home, same problem. No front AC after about 4-5 hours of driving in hot weather. Called dealer's service dept who said he had never heard of this problem, but admitted the Enclave does have a series of odd things breaking down.
Anyone else experience this? Any suggestions before I take it in to be looked at and lose my car for a day or two?
#2 of 201 Re: Buick Enclave AC problem [bmanly]
Aug 19, 2009 (11:08 am)
Yes, similar problems.
My wife and I felt the air conditioning was performing poorly for a while, we had the dealership check it during an oil change, and they said it was fine. I think they only checked the temperature in the duct work.
This weekend we where two hours into a four hour drive, and the air conditioning stopped. We did stop at a rest area. When we restarted the car, the air conditioning started up again and worked for about 30 minutes, and then stopped. I really could not tell if the compressor was running, or trying to run, we could only feel the result.
We took the car back to the dealership, and they found the freon was low, but they did not find any leaks. This seems strange, to have a freon leak in a one year car. The dealership said it might have come from the factory that way, which I struggle to believe.
#3 of 201 Re: Buick Enclave AC problem [bturig]
Aug 20, 2009 (12:30 pm)
Good to know about the low freon. Let me know if that seems to correct the problem. I haven't taken any long trips since my problem nor have I been to dealer for service, but will be going there next month.
#4 of 201 Re: Buick Enclave AC problem [bmanly]
Aug 21, 2009 (7:15 am)
re: Low freon. My upstairs AC had a slow leak in the coil. When the freon would get very low, the coils would freeze up and eventually block airflow. I would turn off the AC and turn the fan on. Over time the ice would melt off and it would cool again, until it froze up again. Sounds like what you were experiencing. Hope it was just low from the factory.
#5 of 201 Re: Buick Enclave AC problem [wlbrown9]
Aug 23, 2009 (7:47 pm)
The dealer put die in the air-conditioning system, so if it leaks it will be easier to diagnose.
I am also going to run down to the auto-parts store and get one of those thermometers that you stick down into the vents. So I can get a baseline, on a fully charged system.
#6 of 201 Re: Buick Enclave AC problem [bmanly]
Nov 18, 2009 (10:19 am)
We have the same problem. Our 2008 Enclave was delivered in December of 2007. We first noticed the problem in the summer of 2008 while traveling through Atlanta in 100 degree, high humidity weather. The cool air flow through the front vents slowly diminished until there was no cool air at all. Since that day it has happened numerous times, but only when it is warm with HIGH humidity.
We've had it in to the dealer four times (the fifth time is tomorrow). The first three times the dealer "could not duplicate condition". The dealer also tried installing a data recorder for one of our trips. The air conditioner quit working once again but there were no unusual readings. On the fourth trip to the dealer they replaced the high side pressure switch. It didn't help. The problem reappeared about 1-1/2 hours into our next trip. Tomorrow the dealer is replacing the following parts; sensor, valve and seal kit. The dealer has never heard of this happening on ANY car before let alone my Enclave.
What seems to be happening is the air conditioners evaporator is freezing up and restricting the air flow. If we pull over and turn off the car for 20-30 minutes a large puddle (small lake) of water appears under the car and the air conditioner works fine until the next time.
I really like my Enclave, but when the air conditioner quits during a trip I'd trade it for a Yugo.
#7 of 201 Re: Buick Enclave AC problem [angusmcgee]
Nov 18, 2009 (11:16 am)
Thanks for writing. Good to know I am not the only out there with this strange, seemingly unfixable problem!
I got the same response from our dealership here too. They "couldn't replicate problem" and couldn't find any leaks or low freon. I have had them look at it twice now, and while it won't be an issue until next summer, I am truly hesitant to take the car on long family trips, which is main reason we bought the Enclave in the first place.
We defintely noticed the lack of airflow but it is puzzling why the rear "aux" system still seems to work when front is shut down as the dealers says there is really only one system for the whole car. Let me know how your repair goes...
#8 of 201 Re: Buick Enclave AC problem [bmanly]
Nov 18, 2009 (12:18 pm)
The dealer told me that the rear auxillary sytem has a seperate evaporator. That's why it continues to work when the front shuts down. Initially we didn't have a problem with the rear. Whenever the front air stopped working, we angled the rear ceiling outlets forward to get some relief from the heat. On our last trip this didn't work. The back unit was somewhat cool but not cold. We live in a southern state where heat and humidity are a normal ocurance in the summer months and it's rather nice to have auto airconditioning that works.
Be sure to check the lemon law in your state. In our state, you have to file within two years of the delivery date. The dealer has to have made at least three attempts to repair the problem. Our dealer has been great but the problem remains.
I'll let you know how it goes.
#9 of 201 Re: Buick Enclave AC problem [bmanly]
Nov 26, 2009 (8:47 pm)
We have the same problem. I noticed that the blower speed was diminished (1/2 speed when on high). I tried everything from a control stand point. Finally, we pulled over at a gas station and the problem went away after shutting off and restarting the Enclave. The dealer replaced the blower and on our next hot summer trip it happened again. We have had many electrical/electronic/mechanical issues with our November 2007 built Enclave (passenger air bag light/sensors, driver electric window switch, leaky rear sunroof, rear shock failure, left and right side front idler arms replaced, cam shaft sensor fuel light). The dealer has been good but the car has been a disappointment. We have 35,000 miles on our Enclave and just priced tires prior to winter - WOW! $1,000 to replace the tires because their are very few choices on a vehicle this size and having 19" tires.
#10 of 201 Re: Buick Enclave AC problem [barry37]
Aug 15, 2010 (4:38 am)
I own a 2008 Buick Enclave and now have the same A/C problem described in this thread. Didn't notice it before because we live in a northern climate. Has anyone ever found a fix? Our dealer just says that they can't duplicate the problem.